How to Install Telegram on Xubuntu 18.10 Cosmic Easy Guide

Telegram Xubuntu 18.10 - Setting Up

4. Installing Telegram App on Xubuntu
   Set the SuperUser as owner with:
   (This for a System-wide Setup with Admin Privileges, for a Local one simply Store and Run it from within your User’s Home Folder)

   sudo chown -R root:root /tmp/Telegram*

   If Got “User is Not in Sudoers file” then see: How to Enable sudo
   Then Switch the Telegram contents:

   sudo  mv /tmp/Telegram* /opt/

   To insert Telegram into the System Path:

   sudo ln -s /opt/Telegram/Telegram /usr/local/bin/Telegram